CVE-2026-40215 Affecting openvpn package, versions <0:2.6.12-1.amzn2023.0.4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-AMZN2023-OPENVPN-16709980
- published16 May 2026
- disclosed8 Jun 2026
Introduced: 16 May 2026
CVE-2026-40215 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2023 openvpn to version 0:2.6.12-1.amzn2023.0.4 or higher.
This issue was patched in ALAS2023-2026-1644.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openvpn package and not the openvpn package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.
A race condition in OpenVPN 2.6.0 through 2.6.19 and 2.7_alpha1 through 2.7.1 allows remote attackers to potentially cause a server crash or leak heap memory via a use-after-free triggered during TLS session promotion.